[Constituents of Acer nikoense and Myrica rubra. On diarylheptanoids]

The diarylheptanoid constituents of the titled plants and their close plants were reviewed. Many new diarylheptanoids and their glycosides named acerogenin and aceroside were isolated from the stem bark of Acer nikoense, A. griseum and A. triflorum. Myricanone, myricanol and its five new glycosides were isolated from the stem bark of Myrica rubra, and myricanone and galeon, from the stem of M. gale var. tomentosa. The structures of these compounds were determined on the basis of chemical and spectral evidence, and chemotaxonomy of the above plants was briefly discussed. In addition biosynthesis of acerogenin A, revision of the structure for isomyricanone derived from myricanone, and some biological activities of A. nikoense and M. rubra were described.